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I had originally picked out another Circe problem for your enjoyment this week. However, this particular problem was in the genre of “series” movers, and it occurred to me that I had never shown you one of those before. I didn’t want your first one to be the rather complex affair I had selected. So,…

In this recent essay at The New York Times, philosopher Gary Gutting argues that the Catholic Church should reconsider its ban on gay sex and its opposition to gay marriage, for explicitly Catholic reasons. He is especially critical of “natural law” arguments against homosexuality. It’s mostly a sensible essay, I think, but it is not…

My main line of research is in algebraic graph theory. In particular I am interested in the eigenvalue spectra of Laplacians on graphs. Those don’t often get mentioned over at HuffPo, so I raised an eyebrow when I saw this: A mathematician by the name of John Urschel recently published a complex paper in the…

As you might have noticed, Sunday Chess Problem had the week off. If you really need to get your fix, though, you can have a look at this web page I made for my chess problems. You’ll recognize a few of them from the Sunday Chess Problem series. I did, however, manage to get the…

Secondlawapalooza has broken out over at Uncommon Descent, with a series of posts trying one more time to convince the thinking world that either evolution or abiogenesis violates the second law of thermodynamics. They are unmoved by the fact that the violation exists only in their minds. One recent post, by Eric Anderson, is entitled,…